{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x93d418d58f31dadaff3d2bbc71ce0aa1526c30fa5825148ec07af2217d2dc7bf",
    "signature": "0xf68e307a7b62f562f9d5a53439b3e86b88a4772a0fef7f904631a9f1c00b7a0f28454e1dbf42d0b58dcd3c3dbc75e603f6157b6ad2163eda8036ee9450279a731c",
    "signer": "0x98c2e3A50D9321547b3BBF0d87c05Ed84A66ED67",
    "userId": "679325591"
  }
}