{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x10e89185376d71dae7c6129387d692ce421f6667d7050ed1daedcdfca75d2daf",
    "signature": "0xfd6a1ffa8d3e1d55b75eccf8843d89237114475636f09b9c3a06a42d5df5824310f8eddf71210e740fafdf3710082219dc1959749f052c7927d4f2045e99884b1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}