{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x3b1b996e68197678f87402b225f9cfce702691b7fe7dee5cd3a3cb5bb19579e1",
    "signature": "0x7660aea6eaa5d500f69516d067bcd297b1459be39810c149f06425e4659433af01a2ee9120bd0efa368444c602a59a0c9a166473ba760454a991d4776b4d13851b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}