{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12728",
    "entityType": "User",
    "nonce": "0x84c6e21f5e43485cfab0af92705c2ff5e0e44c5e5b5991944256a3d8190cb2bd",
    "signature": "0x4d10b43ba984a59effdcf14a7f255a7309641513ad4b75001ab8f737fc17141e647d36b10b589e1b39dea383b7510bf11094a14d7dd32ab89d490b43d6c73a911c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}