{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881067",
    "entityType": "User",
    "nonce": "0x532d1cfd7f35d6af3e0d8c48b0e5d890225f43e22b88536f11fac8368cc64022",
    "signature": "0x946429dc4f90e68f0cef98d0b5dc4ac289a754c6167dd7e9cada6a56945833551ede87b141f5c0de4749aa832819d2d44afa4b6e0cad9fac5bbc552a6f4d28c31b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}