{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1235718",
    "entityType": "User",
    "nonce": "0x6cb189414e6814f25f3ccd01bf3022d634ec39d5d4a2a887d6bdf09feff714e5",
    "signature": "0x840bec206268935ae3f9c47e8bbd880401ca9e14965b4628d8c029b613714f65095fea9739bf1bc88dbb1b0153b8471cbae6dd1cbd98224e49a998078f3a15971b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}