{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54292",
    "entityType": "User",
    "nonce": "0x50d6bfe70baa78ed46173775b234cde11d325a031a6f339c6afb67acd31d2a9b",
    "signature": "0xf2fa52d122d41afd4dcbde93968267733f96b095fb9b9aa0ce0775947ddb10577aefe045538d44f305ecdc702ded3c6e0c7bae9ca1ce9711f04e2fd6153bdda71b",
    "signer": "0xAA981726F7939BF5eaAbfa9a58D0C454f5cB535D",
    "userId": "398277387"
  }
}