{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x20734aa24104ba9b30e88928082ef45ba9021e7b1dd24304fecc6f1e73a23901",
    "signature": "0xc43f22140a8dc775588b9e255f725db23ce0511c4d62413ec64a00c14cb6759d042724b6f445481253f8903f7190b906ca3bf3a88e82a520ffc507f4e8f186841b",
    "signer": "0x2E09706d061Da2bB66d01F583c734E89CFCd23D1",
    "userId": "14811"
  }
}