{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x4663e621f40ee7844d2ede1718d3a7dbd8c5f7a9466d0431b8cd54f6d3f16c9d",
    "signature": "0xb2651476797ed971b206627abd64253f1b472355006e234a970fe13fe2c5ba4c045155f9f579ce276f5f02dac087c87a509b52b02c55af50dbdc6736fa48a0081c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}