{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x44c46d8cca3c9c0c9e205fac06b121b83ab056d995eacb7a1313894d3ac97dd3",
    "signature": "0x5b4301340cf191e11e57eb0fb46a70e190e632b595b43707990d2f3bd16abff87e4604e787365942666a0a93d214e4c1b56180124c3bbc10980cbb95775797e21c",
    "signer": "0x0fdbE0966d6f65E3DE225D16D06131c10d4F2b3e",
    "userId": "560630042"
  }
}