{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103316",
    "entityType": "User",
    "nonce": "0x17d4d1cc8e923839c6b96b52b451224b023b6595049ea98c34b939e251944d50",
    "signature": "0xda99e7755c2d6733f785078f1b876e12be4259080ac4853c23d58760315dd1ae39f5bbf3501246d323e53528f7511eee7d02f9bdc1edd72933f9a31606a13c701b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}