{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297781",
    "entityType": "User",
    "nonce": "0x4384f85262ca37b51f0c2697bc0b93369275eee8f0d8b2e18b7049e3281d1989",
    "signature": "0x54e8c7e57e2b6090f8100b5c5397b1e7ffe6dddcfe4e15dbd50912c289c571d479290e150f430541600650f73ce8a3045be81bd11603e872d0d58c6852ac74ab1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}