{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "217405",
    "entityType": "User",
    "nonce": "0xff12cb0b54b7b3aa89a48a3bb800450ed30f797311ba19f995b72e2c5631bf59",
    "signature": "0xe96d8be6ed5ee6414b7747bd1a09f56f3c15ffc9583102c2ba44a440feabb7d9504f3f3cc212c539ab5647359b2940bdd30841c4ecdab360857b7d7f12eb7da01c",
    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}