{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a2b160169d1df3f4cc8c9ebfa40e4266c6c25eda4741fa45ff7825a06e491b4",
    "signature": "0xdfa4bf13d5060051a9b3c8905ec19e71bc2d2807e13d452508416d64416264d81e16fc06726c9fa52c2357482b3b0c17666e3a23c727977b3e4f1647166dc5351c",
    "signer": "0x8723f4444838195bf57783CEEB5779429AAf83D4",
    "userId": "61784393"
  }
}