{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x020621c0974ac0897150a7fcdda2faa917fb0167f22d9be5e37f013fb4386159",
    "signature": "0xc0234eae980b8676bfae1a8083c23c081945eecacb4ee9a66b8ab688e60a91292544cc3896434de2f1a0b47d1b088cec705ce884f9f26230831c244bc4aee5261c",
    "signer": "0x6592F4D527E7ee31e8218084125229dC1f0e272e",
    "userId": "726657386"
  }
}