{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "208551",
    "entityType": "User",
    "nonce": "0x8dc80e0d2d8b54c4e40f78143bee26c779b9f7887ea044b820d990a971084b52",
    "signature": "0x730248d18b9e1dfaf80c57b2899e0379130df26fe1a501d7eb01a918aca97d6668b0e23af9c2b9158483bfc624fd0c5e555da1a9f80887c4c3c1a2921fff5a701c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}