{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "910778788",
    "entityType": "User",
    "nonce": "0xa499b13ea43d4c70fd950bde5232c561a43f7914521bf95eae1c1f8b0cd6eb57",
    "signature": "0xdb8a0b54ba6ae983d4e14b2754398d52c99497b0d3bd1c39c8a7c1ee90bf4d8e480ed7d5b6ad5fa0777d9d861c225141564e71fe15a579514133d104c3441edd1b",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}