{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489026160",
    "entityType": "User",
    "nonce": "0x7942fec5b3938ae066748612b57eb0a49dfed5ed2fd2bd3612a8a3f68df5524e",
    "signature": "0x71474dd87cc0fef88ca1588a1af8b35b89a1e367d786590f381d6f163617f2ad73a28ec42dd031ad8fa266918c65f70e82c91b2d5a7fb50938f5b7a0a7ac47a41b",
    "signer": "0xE534A1ad2e8E1f616866185D1efDf463B0eD38b4",
    "userId": "353625"
  }
}