{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "87819",
    "entityType": "User",
    "nonce": "0x7f97db051d5f9cc824c8c4b0f7b5608ad5e7c1da0d1665bf754f02fd5aed207b",
    "signature": "0x4bb6706c6a4d51926e9800b89f17be99e2d264210cf74b9e02aa77c8a83ddb080bb63fda1e6dc95cfaffcee8d25ec8eb20d573bd368177c48b39ca9d075ec69f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}