{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375053134",
    "entityType": "User",
    "nonce": "0x76137530627c6e2a9e491297620946c5fd8415259aae401185cd1ee1ca574c06",
    "signature": "0x6bff2323ccf582868c91a78401c3c70761305ba410dda14e40f72561508526af7e787f8d63f916996bdce6a07444b5c60d9d3d5d3bca7953105a16b005e608601b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}