{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "272569",
    "entityType": "User",
    "nonce": "0x239266eea841ac16dea95a9f15816bbb97a48b23b672ae9e97f18eff04535266",
    "signature": "0xe509c8c4c754af001016c5034b9940331f32b81bdb9d6000a736c05024952c1414357bdd7e84ed4a5cd12557510111a5f5d1c7e6f8936b7ef4025d2809e4ed351c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}