{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1419678",
    "entityType": "User",
    "nonce": "0x9d4421ded706c31cc45695b59c4bc650a2ef6dccf4d4920cfcf67c2478e583b7",
    "signature": "0x6ed7eeed64e77ec9f9ee755e38d10c0f151dbb536b9f8f81c2db93e2892751f613e2b43a310bae8bb672eecd4dc59fa308105cbf73308b6849bfbc2161d198ea1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}