{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x8eecb65bf0dcd1b4c482d7ab0a9b1871ccdce3056880178970f06f4f2f4075e2",
    "signature": "0x932e5209cbf6ebd01d111ca141d8ddbd542b572cc4c44e6703f75a1c0aaee5b90d3040aecbac5b6aea5be079c2667ab9da067e5f656e6bb82ab9ffb6b70a95431b",
    "signer": "0xf0F491bE628c3A5BF3904d1Ae68bc59234407951",
    "userId": "560417026"
  }
}