{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x98407c75ac07885278fd44de51f835fa3ff4b3fe20af9580f6ce037ad6cc4633",
    "signature": "0x29f5add645e3c639728358aa421047e9df00625210c305826f1ca4b0e574b88717fc8bc448a3b9ee0dbd30403f9ef1a762c5c0c088e139a0d965994158dddf821b",
    "signer": "0xE056Cc66880683A29B77CF9a0948DB5404aC9891",
    "userId": "743180230"
  }
}