{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "370091516",
    "entityType": "User",
    "nonce": "0x8f03175ba534bd46cfb781b9e7f055f7857131e53acc4d288457e71b431659a7",
    "signature": "0xc78c1960867ef05a42683f27ba93f8848f226769cdd451b3c51e3fdd07bd5fce63d1377d5b541834d3a522899a636537b9642942e1bad7af8d0effcfd45f94011c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}