{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5231",
    "entityType": "User",
    "nonce": "0xae108d5a0c1e6be1ea64dd9cae34514806e36e7131b40df64a1dcc4e6687e600",
    "signature": "0x8d33467dfa705f057354ce5f3c1ea94b593f71a1904af9e3dca0cf9fec9faa8f179a2dee12bae525b88aed24171cc6425991621f5e8ce5f0b51816d4d532b5e51c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}