{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf173d3566ed874b148ab1729f8cf56cb404b07c303bc03292f559602d7ada43e",
    "signature": "0x0255091aa90fee6f9fe017c54748d26b140568948d5441d509590442266a725a0659bcbb5d5fe835274d1236d27a27a64401aaa5a0fc79c2087806a5bccb13491c",
    "signer": "0x22923a5E5b0Cb133B9D8D9FE628cC5BbCD434508",
    "userId": "450159398"
  }
}