{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "629154627",
    "entityType": "User",
    "nonce": "0xdeeef0d22b5ae45daa99f62c58f91dba66c64fa37a7d61eb6c8de3a057fcf013",
    "signature": "0x259df16b143d1d51ebf806c7f63aebee2badc23cce87fdb9c4a461b0f447070c118cd75a0d5ed9a3dc2edde973976b464bfae4c565a125ff777199226cf923181c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}