{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c9e88487fc8baeb0ce4199adaa2127fdec0fb6459da0e07c5db916c108123aa",
    "signature": "0x588e1ce0b521f9a56340259298f8ac7a7ea7a51f9a6a7126feb01307d80bf7c17a368f6faac3b0484ee99a4fac0e11455f8e3b7d29a0b14f9579e9a578e0563a1b",
    "signer": "0x363693A59feAe370750D0B9f2E8bbD445a8b3e28",
    "userId": "392320637"
  }
}