{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "600556383",
    "entityType": "User",
    "nonce": "0x5ca791e17dd87066c2cad813e7c24a01583cca5ac3ce18c5aeca2fb65e6c22a8",
    "signature": "0x0f984569217b0b32a75f8c124627d0a13fd6ab0e1ff1f836310a56d66952b6c54b4f899f368133722411c5661c083ed6e38a9b433189949ae8288ecc0556dc581b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}