{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13721",
    "entityType": "User",
    "nonce": "0x12145dddea82168cbc5b1557a1a4e079b6c9db9f47a61b0e15300558cf6e01d5",
    "signature": "0xbc0f6f21ff1e97e9038f8e57531f169a98d5d0e34db66edefa65eb10ca70bcbb6bd745ef62d9d75662a2d7f10ff7c41258dcfbba84290f6ace9fd14fef61df0a1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}