{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0622af0d3d65bb88080a7a81f6d7993b22e1e3a59cf775e4fe23060d0c854366",
    "signature": "0x4d3a6514d87375f989a0188379542011d925de16a2966cb530418f274a3ef7ad018453f32c212c72ef46a79e6afa38bfca9ad989592073e0d99caa64bd42d4ad1c",
    "signer": "0xc0d1b6f997F346E0291eDa5a82ffC8D9d704FC21",
    "userId": "292524943"
  }
}