{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1666813",
    "entityType": "User",
    "nonce": "0xccc73b10db9368c3964139a012f63c2d0d6c0cfa0d288e22a224479536619cda",
    "signature": "0xd694f4e0f6ac308ae33e70eedd8ae261cfb81e9db751413b1e05a3c4d9fedb834bd54372955486e72cb159214542456afec48e8c7f16a180c5a85c9120867f6f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}