{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x1aa3c888d582e0fdbf7953b49feb36bb648d5d680557c1017d160f73db4de109",
    "signature": "0x0763efb44dbd2758a4b15a1bd572c819ea01c6251258658fcc25ab3faa7657a73ad9a6cefb670bf998b1f4444ba0e0761e1ac41febfca25e156199be064a54be1b",
    "signer": "0x4d6701aee41cF386F0f1Dc360F47F200983c6c62",
    "userId": "454478631"
  }
}