{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10999",
    "entityType": "User",
    "nonce": "0xc40b92b129072af9e31db5be8f3cf41595ed018ea609987544710bb98395a6d4",
    "signature": "0x0242c41c9dc2601546b1f9eecf60ca3a6328f442b0ec06a3445cdcc3b502ca76223a99e5d773c02914c5bbcab93f79ac9dfcec8a2d3da5699a2018a1e1c8a8711c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}