{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "743011",
    "entityType": "User",
    "nonce": "0x14f5948cb7f3fb7b45f84a770e8171c636e380fa3b10284790caa89346662641",
    "signature": "0x05ea594716c7b67b97f9ad18229a1927ac78afbeca7ea880601555b0bd672b9f0c74d14f41de3ca729c17d53f3af47847b0d1af3d0df7fd0382e6d188c26f2021b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}