{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387358",
    "entityType": "User",
    "nonce": "0xebd1bf1981b135e1fa2e745881369eaaee99bb090bcf42aa943e394502a0c0a7",
    "signature": "0xa29ca5724562e51e7d6294b0c02b2386ad457583cf6e7adce32a951e6f76b4996831f7c7d6dd17a2c13f22416bff468c3b148904b3515e5c538cc9deee3aa7f91b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}