{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51540",
    "entityType": "User",
    "nonce": "0x5081877e5050c1356ee8bc65bda57f8b038fc12e9b13e645b0a114749b1231e1",
    "signature": "0xd45734ea37597d286fa72aa23e3c837c3f87f935b657ecce3d800a0d69383eef2e6338623118c778fe10c2f01e332f1e47ece480679657e4f0d3f14aabf8d3611c",
    "signer": "0xfe73cd4bc8E45c5aC794633336A85475bD51b0f2",
    "userId": "284924323"
  }
}