{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755263",
    "entityType": "User",
    "nonce": "0x6ac43760b9eb80f01cd0a16b12e9e81fc847356484441fba6c371b7ae2bfb5da",
    "signature": "0x36954c190c24affa2453c973db2ba2a52c85558681278955421780fed3664f2b6a0c7f71646144e4a9535195836d7b33e770e2ab1b128dd7ff58c4e9829419021b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}