{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5a0fc7c4ad1f0c2cffb69c7f55faefbbf5c2961e62a99111a1b99ebd04d887b2",
    "signature": "0xdec482692012b126f91e4188024a5e9f437e0f21f44989a13bcdff2395e28c0c2e97fb38f83c22f53e6cd6bc32157555f8ca04fd673172810ada7464644288f31c",
    "signer": "0x61cB909fE15907D5BB63D69fA48e16016666A371",
    "userId": "671929175"
  }
}