{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x25d771d5bb78cb9d9a2e401e31919d5aee82195fbf27dec1effc8143a1b985e3",
    "signature": "0x0b269b241657bc7402c504879004a16f7911bb79f4f431b7fe641981e8c21add1f6848895d4ea1714456b110b8d7ea0687dd26723746559b1725b1d722b1d3a11c",
    "signer": "0xd38BD227844B6BD0BA19a5de6116A8721cf6777d",
    "userId": "299610913"
  }
}