{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3557",
    "entityType": "User",
    "nonce": "0x32bbead7de8cb2db4fd93f87430b3144c14489d2ea017876b59bb3305e33db81",
    "signature": "0x9b9572fc50710520eac4f6144ec398aa3ba19f356c73ea94fcaea029d24f289d6f7db8133541cc1f7a724a963ef4637586bdf8921ce5bed2a8e64ce46ced1ca71c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}