{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe8c7e7ab5b0ed4e50ccb80e0916d877be46dda438be03a6f3bc0abc3b4b1042e",
    "signature": "0xeb1a0a5bbee7ba70edd91f494ebc5d89cc2d44b97e79622459b6a8f8c48d14c3511a3941bc06fe37b7808a2afdf783f35e16ba77589f7acb242368d40bd874be1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}