{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "463524416",
    "entityType": "User",
    "nonce": "0x9602e44737d3a3254cddc08c86b98ec767f740a79e480cef5a59fa8d7df970af",
    "signature": "0x3e4c31e3a7b106f12ac0d338e234a44a184ccbc07a97e5d10fb2336a3f7749de298caa397c8717ba752a20226e0b08b45b2e54dc340787ecfdf1207dee571c5d1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}