{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "469120908",
    "entityType": "User",
    "nonce": "0xe4ad7a3531a1123e56345305519629ace78b12ab5a653507f53c70020200dd5b",
    "signature": "0xb1f4fb793d67f34dc38af4eba6d0b33b94a3cc563206ab99e731fb2018384bbc7f69b99b70b906800a6e349261b7577ede9a1fd40dfcc196709ba243038e8e831c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}