{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "960936323",
    "entityType": "User",
    "nonce": "0xc7eebbb23e3d413cc58cfd34e455f3aed153b75260e79dfb6ac9026ac3385c65",
    "signature": "0xbb34ad8a5404bbabc8de22fbc38fc720f9fa4a5efe135cdd97772e4091532b090299b0532e5eefcef8a04e759327835285e375306b88d4a3e14682024948abab1c",
    "signer": "0x607C0B504B1190F4Fa45D4712D4449C62F7224E7",
    "userId": "870305968"
  }
}