{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599751364",
    "entityType": "User",
    "nonce": "0xde622e9602c4f6c64497906bc6646d9b663f0e0e42cb376298e0c872b8338007",
    "signature": "0x9b89187a0b2fef66e7d6e15bb51f899cff488095d1b6ea85499a3e55da4236f231706fb7d64215a748dbbea37ddd4c352c97e64aac662b1d39456a392919f6cd1b",
    "signer": "0x1481F49fD2f6524D8CDC0089b13bbd2e6E9106F4",
    "userId": "231243"
  }
}