{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "885126464",
    "entityType": "User",
    "nonce": "0xd9e235bb6e0dac2e12cdc1cb5e6b8b4dd82e498d1d9bf17041915e1cbf511996",
    "signature": "0x03805bdb5ca61da59465c3acb82dbec0f5796f23fb191a25fc4e9f7a098154e0620f8f823e8f0ec0f237c01db2dd3743dded5ed2e0d4114272def5e0f4d0ff591b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}