{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "129491",
    "entityType": "User",
    "nonce": "0x6ccc83732146aab983e39b467cb42b1dc306b112f59791c50998ea668638ff7a",
    "signature": "0x16deda3c5584ad24283792acfa5a5839365858afc5b6b42e824a04931140fb0379eb2bfb941da549ebd9c6d0997d2817bb86e587d1aff3473df3dff454eff9251b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}