{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x9b074d7733031d22754d414c07af387843493489ad16823a3d53d2055bcc8637",
    "signature": "0xb8200ff4552ade7c688a4eddfdd1eefaaaaabca410528c39e7d7c2c8daf2dfff4c78ad4632ce4f9f92d86b0936cf4b7fc0c512d86bde082ff5714898d13cb54e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}