{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144887",
    "entityType": "User",
    "nonce": "0xe2942016943160bdfaa7566bbbcc7048b601b2e3464cfb0350e8395f6ed07ade",
    "signature": "0x37755de735c3fbbff60c03fb695ab6e74839645bedb841675b1979a124a70dc3012c6d76d13059bb41797c94e73e9ecf8659b251e2edb0ea16720a6fee3b9d771c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}