{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd6184c263cbbbe9a3af24128bef54fd738d51e0cdbbd5b9ef69e4842cac48b19",
    "signature": "0x0f571dc2141523fc5107d8c03cc5f4ea9ac752745a73ddfd7a2b9d1a41c3db8b2268aca2f774c57ec01c81befb6fa5507415617109a38ad5c08ac39f82a7d7a71b",
    "signer": "0xC2B495F1a4d98DfF10C0470Ab7294791934e6702",
    "userId": "478606538"
  }
}