{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125737",
    "entityType": "User",
    "nonce": "0x3bff45b648ea8e44f7f8f0aea126b1dd05f4efcc1d3de115f5e6773af1f6b5f2",
    "signature": "0x41b347470b61754a1c825b28341ec9a53da7f512dad0c78391117f254d0857476cae4a9957e7358b924db8118beeb8eb6ca3e34569976e9fd124b24eb69cc0861b",
    "signer": "0xE78968C17aD15e71026CC0EF9060c3EC90f9f6D4",
    "userId": "217118516"
  }
}