{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "187587",
    "entityType": "User",
    "nonce": "0x5225ba0aadc3ffe13c5d17afe153b17a472424f534d4e29529cf175b02cd6d46",
    "signature": "0x087fc73998e86d01304429c14a62ed6ebd5fe5816dadf0d10138cf9baad4f39d324d187bcfca60b46a5bdf00527593c79bad4d6844e06ffd6c5d3ac201bcb6471c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}