{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1909313",
    "entityType": "User",
    "nonce": "0x0ffa400f700f588e49cc2eade9d098394ec1adb2a3ee2226d2f2d897aa58616f",
    "signature": "0x7007a10d5b71a726c5d53978708ff471c407a8164d8abe90dd6434ceefb5c8e64ca843ac1e944d43110fb3c8415af938ac4d15ac525497a440ac50af2602de681c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}