{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "364447",
    "entityType": "User",
    "nonce": "0x540c49023051ca505ce5d932cc060ec2f0c4b2cd5ed7f4b7c98d33e51dede623",
    "signature": "0x582a21fe5b963816c3a25f2c5b961faaa1117886e569959411b0893cf9a8a5ab3adca13f3861c541aa5023f0df6353198fba6446fed476fe1609733ce9a771511c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}