{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74883",
    "entityType": "User",
    "nonce": "0x4f77908e4bbdcf585f6c33fc38e4a551fc3613bc46ade9097f5af93f4f69e70d",
    "signature": "0x60d81706bb4e4e63d6d3713be1766e81bf4aa2ef674f12c93f750a6a91459885294b920fa97a26fa41d953c4d3dbcd0f24c975cb035eefbcd0f583e365ec09bf1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}