{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x731aa9b6e37d630506f96cb20fbdf06999a7c561a751512b0338ed27cb2e88fa",
    "signature": "0x2279752f6cf1f5091ad20326d74cc54de7fac86a44db2a6ca0802843d104601f01da654a58b1bb55880dc34adcf4a6cfc9006d5a5c04b1ca8125803ad9f9dc5d1c",
    "signer": "0x13beEFd81c5fb2b0f94D5834E3811b3DB84B189e",
    "userId": "299763965"
  }
}