{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16663",
    "entityType": "User",
    "nonce": "0x0e6ce858d5f0b5933b5710e3cd5ff7da619ee3ef61d60de6fa0ab3ef0b49eb23",
    "signature": "0x9a76b76febf41be8be7066ae9cca5a2d8c0f7602d6870415653616efaac2f58d0d94c78b943efe6b45693d338f90b8e05cd3b0483affc5635902690efccc63441c",
    "signer": "0x78101c17Ff7a0b822f2a8AdF2dbE8FDe9B722aCF",
    "userId": "428437326"
  }
}