{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "19702",
    "entityType": "User",
    "nonce": "0x2a350926228da7c012ad2461e1d89276a018d2b7179079dfdfcfabd598207133",
    "signature": "0x0cd8e5ebcd5edae1d8a7bf4d2b345306423337ad35407b8c9fa5dac1c852a23d27ca3b34d742f5bd00c1a275159d1c2d6d91ee5f112440f00bf2d2e0a73e3b871c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}