{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1542170",
    "entityType": "User",
    "nonce": "0x46ec9cdf5f1332466e6d86eecac140cd058ec9c9227b1e4a9bc491c635200035",
    "signature": "0x9bf833b1e08a4a31efd7a2ff04f93c003d9c9adc3e5a75bc07a6d130c2f9176d5572c9b8eaa1e2dc6599c69887ccacb31331e5a919fc2de030693bfb8522a9051b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}