{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154589",
    "entityType": "User",
    "nonce": "0xb3a0dbbec2d44baf47c3115047009421ebfa54b6b3ded9b02f7fa61375f86f81",
    "signature": "0xb4ff7f90e4388ac2f60fccfd3f43ef552a887ba6cbe667004d1597f45a0a7e2c6d0695ba3460784426956d5fe87a92a15b3f26dbe353f16363c64509537337e41b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}