{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4776",
    "entityType": "User",
    "nonce": "0xe530c78a7867721d70bce7276887b99e4ff7813ed76d5e3a0232713fd401d5f4",
    "signature": "0x690a4b9424d9b20d871b04445a5d41765a6bbb1281629fa7beed9a02effea13a1c2968a61543b368c03c864c3ee5e820b4b3eac82cf15e4cc13d4085e2d699a41c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}