{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75351880",
    "entityType": "User",
    "nonce": "0x12084af5bb01aeff5d379e7394d1ba32dfad9c39355ec6f6f641ebc564ebadba",
    "signature": "0xe0e34aa9e7d06183985f65ab60606165a9b3190fa37524d4d66db580d1e9088a7bf435ce9a27d0872ceabaac2b00f3713d57598f8e23d9915b37fb677f0313db1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}