{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923551697",
    "entityType": "User",
    "nonce": "0x0300402793e66abb020d072dfb8aea930a667866a0e200bfab5b11b5813c3cb7",
    "signature": "0x47b0581db635f471e33e7204e2413bf56d751cc83a7162c80b1a9bf3bb34ef7b086e742d2cbd4b19e3ec5301d3680bf1072fa0d3ee8f001bfa4ca4e3422ea26a1b",
    "signer": "0x53f39D73a2dd51E9e8A362EF3b1383072E37cf26",
    "userId": "74209883"
  }
}