{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139",
    "entityType": "User",
    "nonce": "0x9c88628e32b46072814b0c3b26a52b2442935fb44e2c3eb5a29680c720d1a5d1",
    "signature": "0xdecff34610c62a34fa475e275da153b9b6ff7c8986459d2946245c23925081976455197f8bdc04d1728f8a66084ee3d51909b3f2a33d847637c956e73b33b6dd1c",
    "signer": "0xf4932982eB30F083aAeE8850Fe5d411b7A5Df5a5",
    "userId": "746635137"
  }
}