{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "195415",
    "entityType": "User",
    "nonce": "0x9f5d7662d4b719d4c7ec8d2e1477485dad93b9ec03ec6e01b4aeaff9ea54dbfb",
    "signature": "0xd2bc24976b42469307af2e8595611220fe33a5f7f826cd99b1762d328c713688567c2b0d4350fa5dda1f120357f260cf9dd9e91c692098339d9f94c3c9256fb51c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}