{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "803857684",
    "entityType": "User",
    "nonce": "0xa914cff4799ba657049d1fe88672f2fdda435b5b11c7c6a8d022c6874708f3d3",
    "signature": "0x7c5bb58064da0c9747b82bcde653e6451afb8e1390a4861e3101639490d8017a1774638c59444440b1a8853851c71aac6408b7671a3da41a3c41eb0e215024f51c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}