{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139390",
    "entityType": "User",
    "nonce": "0xa9a4c856eba2c630d666faeda1adbd8785c6423fb90c81688858fc594dbd866f",
    "signature": "0xa00ed14d20a713977dc60e8d6708d3a6c9c930324e05f05d20a7d36f65ad43a06f4a77eafba4ac7b29a428bd35854e8ae83572981e7378a0087296eb610b93cb1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}