{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "452498071",
    "entityType": "User",
    "nonce": "0x84afe08dcb0440cc6d9cfb4000a4cf1ec13a0ef025a5749d78d259c07e3f405f",
    "signature": "0xa9c33aa69cc2b2ae61b6b88e2c640b4b36ac15c8cecf6b2bc656b5fbf6683cf30196e259fbb1620a202983596f60736090b7d2f1da9e369d63bccfa7a773727d1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}