{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0x54e669a946456a8640150baef9327783b48ebabfb08aee3406d187e22994db34",
    "signature": "0x0a4442cc1c77f4dfd1470231ccb5f4d66e1cbef9eaa6d7c5c68000943a39911470e5550181c7716659a3f0e9211dad197566e11ed84f301e06ab79f06fadad201c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}