{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7437782495d1ab9ae4bdad9462f39af408d27a35d8a68acf4f386d303b973678",
    "signature": "0x3fbdeb115562d2c97b63437d99e83dac757d9566543649bb8fe7c810f2ad8dee7d34b70caba89c512c96e471d353e6022fd6fcd8638d7ae664c666b930ee45521c",
    "signer": "0x1355E4a176e5412E1DeC3aFB63ff581A223C882e",
    "userId": "945558612"
  }
}