{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "709077025",
    "entityType": "User",
    "nonce": "0x1bdc8fc0b19413f5bfc4fa5d56ba9dc6ad8e8ceb481217afe6b3f4d152466c38",
    "signature": "0x98fa2b564b8047d4997abd2cafa1eaf7437f9df70719a1b544110344e10fea850ac01f96323688debdaca25ec59a40b173828b03ec4496d44f6d3e3f66ee943e1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}