{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280208",
    "entityType": "User",
    "nonce": "0x7ed520369ed5f385fea25b0c67c261137952d5ff284e7e8bcd8cbadc933cf10b",
    "signature": "0x462e532264b535b066317994baacbe9e2d8b1d3be5897de9f8d1c4227bb292846bff508a2b8e3290a8c3402fea8da1d768c8c25ee882b709ff55acffffdbb2301b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}