{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486490947",
    "entityType": "User",
    "nonce": "0x3bf6d2a31b74baba1bddf758340315abe110d2026bf5d4f2fdfe0727fa488ce8",
    "signature": "0x644bae945ea234f4ee5193a349a78dd877a5e49c6aa8dee7f407851616e8396506e3d8a5ce0a71550022ab9a1f1652b3c7a41f16a20aa34afb47c9a34fca82a01c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}