{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55290787",
    "entityType": "User",
    "nonce": "0x7974d755c121eac85c723b2ab235cc32d5f0f83ed42177674bacd521ce5fb37d",
    "signature": "0x38d40507db7d51dcea24b67f672047718030dc43f28787657529b3d9cc611819400ca7e43b1b2d48ccac319deaed6702b6ddccdf2a8b83213f07eb0c627276591b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}