{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854614078",
    "entityType": "User",
    "nonce": "0x6dd3b6912c9569236900c60fd0ae09fd96b46ae7b06f2ccf4161cc804c321b20",
    "signature": "0xd49fa66c6dc0481594583d56e85da61491b9b40bfc92d7c40c0650b9fccaaabc4f6ee8a0ac536e8995791eb6fb6f5d13923d1ac98e1fbcf08841682e7e9e3ad91c",
    "signer": "0xFe4E972E3ec8D8d619816F5644f74CB5bA1B01b1",
    "userId": "219239808"
  }
}