{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10431",
    "entityType": "User",
    "nonce": "0xbfa7885b455423fffc47a9314ea4cedb407d3a3057e9fddf0031a85d202a7c1b",
    "signature": "0xb709979d89555b5e3e92d0343a2ccbe933317e64b2f5480f063619a861abae6c637c8270e1a2324354d3fba5266957c6756fe21f4a1d1241762ba3522d6fc94d1b",
    "signer": "0x8c83aB7F6a7f7A93A7CeFeF6E16b212bA43529f5",
    "userId": "549340592"
  }
}