{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64670",
    "entityType": "User",
    "nonce": "0xd36a68a69fbc317f3c4eb987c37d4331b5c9bf6888dd8bdf9644dacbb8c5e1e4",
    "signature": "0x0ef4656ca05c409a2277b9b98d3442c2b0967fcefc5d4886b93633ad173d31bd7fbbc53912dada1b22a51cc6983687e27f00f07712bbb99ba078eccd91f8eaeb1c",
    "signer": "0x51b3C55CCBf38453853E1fac9983a9F06CB12BCb",
    "userId": "93176421"
  }
}