{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "322803",
    "entityType": "User",
    "nonce": "0x80218b1d51b460a53373b8ac4e9d2f17eea5c4c2b12eab8bdf3dfb211670c4df",
    "signature": "0xc54c7c9349c1e8df3d8b1d26f03cfb1e35020d1d0d585f7c0aca5ad168964f796d9dd72c8621f29ddf8c2d1828c9420281806bc17482d082a8b2a5ae85154b281b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}