{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775107",
    "entityType": "User",
    "nonce": "0xf86a9972ebabf78dbe8c429fb6b706d704f20006b273626f5700546adcabc72a",
    "signature": "0x3a4a00e2650d4fbd5852cfdc444c18533990826c8090b0e618f59502d024ef861e206dd173ca310f542a763124b0cbfd3e3a7a60f9705eb6a429ee5d5f6efe851c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}