{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "983643",
    "entityType": "User",
    "nonce": "0x908e625e1a90c27deedcecbb6ed0e9761649d78e11a70b46397570c5c76e76a0",
    "signature": "0xf21fa6529fcf248d6a56294b438f8f9b06a8a259d7c12524a83f86fc0e36bdd129ba58b95a513be95b1877a6b1b4b2b0095ecee29a39baca8220d8abc6f5878d1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}