{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7060a93baa3c383b8864fd753528b3faacf1f946c3cb3e1c3faac2b2e6a57689",
    "signature": "0xbb8c3f389612596a7dd882e4a4684b9d61738f3498b1af75f6e829bf3ef80516438679a167c75f01739507b35076c6847c4680c4b419f9563066204598194d191c",
    "signer": "0x8c5473b865B82a2EbAb23745ffe03CA73600768f",
    "userId": "561254107"
  }
}