{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "631756877",
    "entityType": "User",
    "nonce": "0xdd376d7fa15f104012c339dcef280759cd909d73edf0e956b1cbdf24c5fa4cc9",
    "signature": "0x69f1e479090280326d103ae1a8d9b204af7a6bdf8f1dffba74fbfabeff5fcea80ea8cb1c6471f500e81a2d07044a1ec864deeaf85945f7c9d8ef25c3d499240e1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}