{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123836",
    "entityType": "User",
    "nonce": "0x7989035c436cbe8f9b4f0ca7e0cc5c81747f5226b1a22065c4d1ebcdb29cfa02",
    "signature": "0x889c903ec5eb83e8f06f59993628a5e5729fdd739d0b513bca8b4781886a81da13d0557a60f3108c4e02c3d6b7bef400d2816a934a5d3ba6af3934fcc48d42691b",
    "signer": "0x1B7594799b4E189Ff1B3C4fD8289B2e8d82B000b",
    "userId": "66769284"
  }
}