{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x479452819303c30caced90ccfc20c3460789507cac34b0724636f4e765dcbcf0",
    "signature": "0x6f5bc44713c294b5da99b092e9b60c66ed7a11358a9c1521a12d9a2105110f3e2384af28efc9af04446e141b4243ded9035e19e59c1b1d29b6fe92fe5a7ba7fb1c",
    "signer": "0x7a78569646ADa00a4d555F20fA48e9cDb9ef14F5",
    "userId": "333304008"
  }
}