{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214598",
    "entityType": "User",
    "nonce": "0xce0a18f6ec7f675c0c6f45d5a7d5d564497c7abecb126b78fe34f07fb2ef8823",
    "signature": "0xc401f5797e65ba85e3d3268c0970287b1798dfcf17be984c36244082a8976a0e3f224f35024884bf4047e0e9effededd9331ddc6538f2840f0bb6ad0292cd93a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}